EP1523397B1 - Outil a poncer - Google Patents

Outil a poncer Download PDF

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Publication number
EP1523397B1
EP1523397B1 EP03709600.5A EP03709600A EP1523397B1 EP 1523397 B1 EP1523397 B1 EP 1523397B1 EP 03709600 A EP03709600 A EP 03709600A EP 1523397 B1 EP1523397 B1 EP 1523397B1
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EP
European Patent Office
Prior art keywords
clamping
abrasive sheet
clamping jaw
active
jaw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03709600.5A
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German (de)
English (en)
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EP1523397A1 (fr
Inventor
Eduard Gansel
Monika Renner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1523397A1 publication Critical patent/EP1523397A1/fr
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Publication of EP1523397B1 publication Critical patent/EP1523397B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material

Definitions

  • the invention relates to a grinding hand tool according to the preamble of claim 1.
  • a grinding hand tool is off US 4 077 165 A known.
  • the WO 03/015987 A discloses an abrasive hand tool, in particular orbital sander, comprising a housing and an abrasive sheet carrier and clamping means for holding opposite abrasive sheet ends of a sanding sheet supportable on the sanding sheet carrier, the clamping means being movable away from the other equally clamped abrasive sheet end together with a sanding sheet end clamped thereto so that the abrasive sheet is tensionably locked is, wherein the clamping means consisting of resilient material, one of the clamping means is designed as a pair of pliers and jaws, between which an abrasive sheet end is clamped and wherein the pliers with the jaws and together with the clamped abrasive sheet end about a pivot axis movable and in a pivoted position releasably lockable and wherein one of the jaws as hand-operated active clamping jaws and the other as by means of the active clamping jaw
  • the US 1 077 165 A discloses an abrasive hand tool, in particular orbital sander, comprising a housing and an abrasive sheet carrier, and clamping means for holding opposite abrasive sheet ends of a sanding sheet supportable on the abrasive sheet carrier, the clamping means being movable away from the other equally clamped abrasive sheet end together with a sanding sheet end clamped thereto so that the sanding sheet is tensionably locked is, wherein the clamping means are made of elastic material.
  • a rake face has a cam surface on which the abrasive sheet rests and whose end is clamped by an edge of a clamp spring and at the same time pulled along the cam surface during the clamping operation.
  • the clamping surface moves about a pivot axis located at the foot of the clamping surface.
  • the edge and the abrasive sheet end perform a complex movement, since they follow the one pivotal movement of the clamping surface, but at the same time slide upwards on the clamping surface.
  • an orbital sander with a sanding pad for receiving sanding sheets is known, which are supported with their back against the underside of the sanding plate and can be clamped at the top.
  • the coated with abrasive bottom of the abrasive sheets then points down / out and is used when placing the abrasive sheet carrier on a workpiece for grinding.
  • the hand tool should preferably be placed on a firm surface. This is to insert a sanding sheet with one hand into a slot between an open jaw and the top of the abrasive sheet carrier and keep the jaws open with the other hand in the release position until the abrasive sheet end is inserted. Then, after releasing the jaw, this closes by spring force. This is the clamping position in which the abrasive sheet end is fixed.
  • the abrasive sheet is automatically tensioned to a certain extent by the rotatably suspended jaw wegzu stiilzen wegzuschwälzen from the abrasive sheet end and this entrains - due to an inclined plane contact surface on the upper side of the abrasive sheet carrier.
  • the abrasive hand tool according to the invention with the features of claim 1 has the advantage of particularly convenient, fast clamping in conjunction with tight clamping of the sanding sheet with only one hand with simplified production of the clamping means at a lower cost with high weight savings. This results in a higher removal rate and a higher overall efficiency of the grinding hand tool.
  • the slot clamping the first sanding sheet end can be opened by means of a single, central, easy-to-find operating button for releasing the sanding sheet, the operating convenience of the hand sanding machine is particularly high.
  • one of the clamping means is designed as a pair of pliers, between the jaws an abrasive sheet is clamped and that the pliers together with the clamped abrasive sheet end about a pivot axis movable and can be locked in an end position, is a simple means secure clamping with subsequent tight clamping of the Sanding sheets can be reached easily and reliably.
  • the pliers have the advantage that abrasive sheets of any thickness with maximum clamping force can be clamped, because sensitive by a long closing all dimensional differences are compensated, with a previously unattained high clamping force can be achieved.
  • the hand tool can be equipped with - in limits - different length sanding sheets, because even a long projection can easily occur between the open, half ring or bow- shaped active clamping jaw and the passive clamping jaw and is conveniently housed in it.
  • the passive clamping jaw is designed as a corrugated spring plate which is hinge-like deformable about a bending region and whose one end is clamped like a cantilever on the housing and whose free end carries a friction lining, in particular rubber, is the desired flat spring characteristic (small force / displacement) Ratio) at extreme short length of the passive clamping jaw to save space.
  • the corrugated spring plate can be clamped reliably with the desired spring force.
  • the active clamping jaw is part of a two-armed clamping lever whose lever arm serves as a handle, which is releasably lockable in the clamping position locked, and in that the forceps is pivotable about the pivot axis between two end positions, which define the clamping and release position , fitting with a sanding sheet is particularly easy.
  • the tensioning lever is to be pivoted into its holding position over an inwardly curved towards the housing, barb-like catch hook, the pliers by vertical pressing the clamping lever is particularly comfortable and secure locked or fail-safe detachable bysfindendes pressures to the housing.
  • a defini te spring characteristic of the active jaw is with their ironing or. achieved arcuate design with a certain wire diameter, so that sets a maximum clamping force between the jaws in the clamping position.
  • the passive clamping jaw has a continuous longitudinal notch for the entry of the active clamping jaw, the grip between passive clamping jaw and abrasive paper is improved and the clamping force is further enhanced.
  • One-hand operation here means that for inserting and fixing the sanding sheet actually only a single hand must be active.
  • the other hand can fix the hand tool machine alone, e.g. press against a surface.
  • the clamping servo effect is reinforced with increasing clamping of the abrasive sheet. This servo effect is further enhanced by the fact that the jaw outer contour is progressively curved with little change in pitch.
  • the jaws are made of sheet metal or wire and are provided with a rubber coating, they are easy to prepare, light and reliable.
  • the abrasive sheet for insertion into the slot does not have to be angled up or kinked, but can find itself extremely convenient, so to speak " blind ", straight ahead and then taut.
  • clamping lever is about 60 mm long and the active jaw has about 20 mm lever length, a comfortable, safe clamping of the abrasive sheet is possible
  • FIG. 1 shows an abrasive hand tool 10 (orbital sander) with a housing 12, which - unspecified - outside a handle and inside an electric motor.
  • an abrasive sheet carrier 14 which is motor-driven in vibration relative to the housing 12 displaceable and thereby can achieve a Schleifabtrag on a workpiece not shown with a down at its working surface 15 held abrasive sheet 16.
  • the resulting grinding dust is ausblas- or sucked from the front 121 to the rear 122 of the grinding hand tool 10 through the suction 120.
  • the abrasive sheet 16 is supported with its back on the underside of the abrasive sheet carrier 14.
  • a two-armed clamping lever 20 with a pivot axis 24 ausgestaltetes clamping means is arranged.
  • the clamping lever 20 forms above the pivot axis 24 a pendulum arm 21 and below thereof a clamping jaw 22. This is supported with its saber-shaped curved outer contour 27 on the locking surface 23 of the upper side 13 of the abrasive sheet carrier 14 from.
  • the pivot axis 24 of the clamping lever 20 is arranged on a bearing block 28 on the upper side of the abrasive sheet carrier 14.
  • a tension spring 26 is supported, which can also be configured as a leg spring and which seeks to pivot the clamping lever 20 in a clockwise direction, pressing the jaws 22 against the locking surface 23 and thus the abrasive sheet end 19 clamps.
  • the pendulum arm 21 In the upper part of the pendulum arm 21 carries a single push button 211 serving, projecting elbow. With this, the pendulum arm 21 is movable by finger down, the tension spring 26 is tensioned. In this case, the clamping jaw 22 lifts off from the latching surface 23 and the gap between the outer contour 27 and the latching surface 23 opens so far that the abrasive sheet end 19 is released and can be removed.
  • the distance between the pivot axis 24 of the clamping lever 20 and the locking surface 23 is smaller than the distance between the pivot axis 24 and the radially outermost point of the outer contour 27, so that in the biased by the spring 26 position of the clamping jaws 22 against the locking surface 23 the upper side 13 of the abrasive sheet carrier 14 is supported.
  • the clamping force on the abrasive sheet 16 increases in proportion to the forces that try to solve the abrasive sheet 16 against the insertion direction.
  • the tension spring 26 is biased so low that the abrasive sheet 16 from the outside already by gently tapping on the outer contour 27 of the jaw 22 this moves against the clamping direction, creates the necessary for insertion gap itself and easily with one hand on and nachschiebbar.
  • the clamping jaw 22 consists at least partially of elastic, rubber-like material with a high coefficient of friction, which restricts a relative movement between the grinding blade 16 and the clamping jaw 22.
  • clamping-clamping device In the direction of looking to the right on the rear side 122 of the abrasive sheet carrier 14 designed as a clamp 34 clamping-clamping device is arranged.
  • This consists of a clamping lever 35 with arched active clamping jaws 36 and a handle 39 which forms a pivotable about a pivot axis 40 two-armed lever.
  • the active jaw 36 consists of elastic material, e.g. Spring steel.
  • a clamping lever 37 which supports the passive clamping jaws 38 during clamping of the grinding blade 16 on the inner contour of the active clamping jaw 36. Between the passive 38 and the active clamping jaws 36, the grinding sheet end 19 opposite, other abrasive sheet 17 is inserted and held.
  • the clamping lever 35 In the clamping position of the forceps 34, the clamping lever 35 assumes an end position in which the handle 39 is latched in the latching groove 49 of the rear or lateral latching lug 48.
  • the latching tab 48 By pushing back the latching tab 48 with the thumb or by pivoting out of the handle 39 against the spring 50 from the locking groove 49 of the clamping lever 35 is free and can spring-biased by the spring 42 pivot back into its open position. He follows the passive clamping jaws 38 - acted upon by a further compression spring 44 - in its own end position. Beyond this, the tensioning lever 35 continues to spring biased until its abutment surface 51 bears against the upper side 47 of the passive clamping jaw 38. In this stop position, the pliers 34 is wide open and the distance between the active and passive clamping jaws 36, 38 so large that insertion of the sandpaper end 17 shown in dashed lines in the pliers 34 is almost blind.
  • the pressure spring 44 biasing the passive clamping jaws 38 determines or limits the clamping force between the active 36 and the passive clamping jaws 38.
  • the clamping lever 35 is released from its clamping position by unlocking the clamping tab 48 and pivoted about the axis 40 in a clockwise direction, the distance between the clamping points of the abrasive papers 17, 19 again becomes shorter, so that the abrasive sheet 16 is relaxed and thus easily removed.
  • FIG. 2 shows a spatial representation of another embodiment of the abrasive sheet carrier 114 and the sanding hand tool 10 according to FIG. 1 as a top view obliquely from the front.
  • a clamping lever 200 is arranged, which is substantially the FIG. 1 corresponds, but has a separate actuating button 2110 which is pivotally mounted about an axis of rotation 610 in an abutment 600 and is elastically supported by a compression spring, not shown, against the unillustrated housing.
  • the part of the button 2110 located above the axis 610 moves toward the housing.
  • the part lying below the axis 610 pivots outwardly, being supported on the upper part of the clamping lever 200. This is pivoted on actuation of the button 2110 outward in a clockwise direction, so that the jaw 220 lifts off from the locking surface 230 and an intervening clamped abrasive sheet can be removed because no clamping force acts more.
  • FIG. 2 is applied to the effective and the same design parts of the FIG. 1 directed.
  • the reference numbers of the equivalent parts of FIG. 2 is in difference / match to the reference numerals of FIG. 1 each preset their first digit.
  • the abrasive sheet carrier 114 carries in the viewing direction on the left on its rear side 122, a pair of pliers 334, which substantially the in FIG. 1 explained pliers 34 corresponds, but is designed modified in detail.
  • a clamping lever 335 for pivoting the pliers 334 is arranged only on one side of the abrasive sheet carrier 114 and mounted resiliently latched on this side to a stop 445.
  • the forceps 334 is shown in a tensioned state, in which its nip or a not shown abrasive sheet end is pivoted in the greatest possible distance to the clamping lever 200 on the opposite side of the abrasive sheet carrier 114.
  • FIG. 3 shows the details of the abrasive sheet carrier 114 according to FIG. 2 obliquely from the back below, the design of the active clamping jaw 336 in cooperation with the passive clamping jaws 338 becomes clear. These support each other in the clamping position shown and can hold an intervening clamped, unrepresented abrasive sheet end pivoted away from the clamping lever 200, so that an associated abrasive sheet is tightened so tightly that a relative movement of the abrasive sheet against the working surface of the abrasive sheet carrier 114 is minimized.
  • the previously explained with reference to Figure 1 and 2 parts of the clamping lever 200 are clearly visible and will not be explained again at this point.
  • the abrasive sheet end 19 is inserted so far between the jaw 22 and the locking surface 23 that projects beyond it by about 5 mm. As a result, a taut and firm clamping of the first abrasive sheet end 19 on the front side of the grinding hand tool 10 at the abrasive sheet carrier 14 to accomplish with relatively little effort.
  • the second abrasive sheet end 17 is to be inserted and locked in the opened pliers 34 arranged at the rear side of the abrasive sheet carrier 14.
  • the sanding sheet 16 is taut.
  • the abrasive sheet 16 is held taut on the abrasive sheet carrier 140 and thus can be used for grinding with high efficiency.
  • the clamping lever 20 is to move by pressing the button 211 as a horizontal extension of the pendulum arm 21 together with this about the pivot axis 24.
  • the jaw 22 lifts with its outer contour 27 from the abrasive sheet 16 and from the locking surface 23 from such that from the increasing gap, the abrasive sheet 16 can be pulled easily easily detachable.
  • FIG. 4 shows a plan view of the abrasive sheet carrier 14 of a grinding hand tool 100 with another embodiment of the abrasive sheet tensioner 340, 500 according to the invention.
  • a pivot lever 500 presses down with its clamping jaws 510 a grinding blade 155 of a sanding sheet 150 to the top of the abrasive sheet carrier 14 down and holds there.
  • the pivot lever 500 is against the spring force of a leg spring, not shown in the release direction according to movement arrow 560 pivotally, upon reaching the abrasive sheet end 155 under the jaws 510 is pulled out. If the pivot lever 500 at its handle lever 520 in the direction of viewing to the left in accordance with Moving arrow 550 pivoted, the abrasive sheet end 155 is clamped. Since the pivot lever 500 follows the abrasive paper 155, when it is pulled outward, the abrasive sheet is increasingly clamped tighter.
  • the viewing left-hand grinding blade end 155 is clamped at the rear of the grinding hand tool 1000 between a collet 340, which consists of an active jaw 360 and a passive jaw 380.
  • the active jaw 360 is formed by a wire bow 370.
  • This wire bow 370 is approximately semicircular curved - extending from the pivot axis 400 in the viewing direction to the left -, where he bent from a radially inwardly curved portion at right angles to the outside or axially, the querstegartigen active jaws 360 forms.
  • the spring clip 370 passes from its c-shaped curved portion at its two symmetrical support surfaces on the upper side of the abrasive sheet carrier 14 approximately perpendicular bent outwards parallel to the surface of the abrasive sheet carrier 14 in each case a stub axle 410, each in common with each groove 430 between two bearing block-like projections 440 forms a pivot bearing about the pivot axis 400.
  • the wire bow 370 in each case goes outside into a 90 ° bend. It runs parallel to the longitudinal axis on the front side in the viewing direction 370 of the Handschwingschleifers 10 and forms a clamping lever 350 with a handle 390. On the rear side in the viewing direction he forms a damping piece 355. This is based in the clamping position of the collet 340 biased on the top of the abrasive sheet carrier 14 that during operation of the orbital sander 10 no relative movements between the wire bow 370 and the abrasive sheet carrier 14 occur. This avoids vibrations and annoying noises when operating the orbital sander 10.
  • the clamping lever 350 can be latched in the clamping position on the latch hook 450 suspended.
  • the querstegartiger area of the active clamping jaw 360 is supported against a plastic, particularly non-slip, elastic contact surface 420 of the passive clamping jaw 380th
  • the contact surface 420 of the passive clamping jaw 380 is formed from a rubber-like strip part which is fastened to the outer end of the passive clamping jaw 380 configured as a surface spring.
  • the passive jaw 360 is parallel to the surface of the abrasive sheet carrier 14 and is fixed thereon by being clamped under the foot-like end of the vibrating body 160.
  • the passive jaw 380 is configured as a surface spring, it does not require any separate means, such as e.g. a hinge to define the pivot axis 400.
  • the pivot lever 500 is biased by a leg spring, not shown, instead of by a tension spring in its clamping position.
  • FIG. 5 shows a schematic representation of the active jaw 360 as a bent from a single wire member element. It can be clearly seen how the tension lever 350 after first right-angle bend merges into the first stub axle 410, from there by second right-angled bend in the first semicircular wire bow 370, from this by third right-angle bend in the actual, transverse web-like active jaws 360, of this fourth right-angled bend in the second semi-circular wireframe 370 therefrom, through the fifth right-angled bend into the second stub axle 410, and through this last right-angled bend into the vibration damping extension 355 which biases against the top surface 140 of the abrasive sheet carrier 14.
  • FIG. 6 shows a further variant of the vibration damping of the second wire bracket 370, which is elastically clamped in the clamping position between two elastic damping jaws 655, so that 'vibration and noise are suppressed.
  • the damping jaws 650 are arranged on the upper side of the abrasive sheet carrier 14.
  • FIG. 7 shows a further variant of the vibration damping of the second wire bracket 370 by an externally supported on the curved periphery of the leaf spring 660.
  • FIG. 8 shows a fourth variant for vibration damping of the second wire bracket 370 by a arranged around the outer stub axle 410 damping rubbers 670, an.adjust obliquely arranged inclined surface 671, the wire bracket 370th supported in the clamping position and its vibrations are suppressed.
  • FIG. 9 shows a further embodiment of a passive clamping jaw 700 as a detail, not as in FIG. 4 from a surface spring 380, but consists of a U-shaped spring wire piece.
  • the passive clamping jaw 700 Between its U-legs 710, the passive clamping jaw 700 carries on its arc a connecting piece 720 with a contact body 740 made of rubber or plastic, which has a contact surface 730 for abutment of the abrasive sheet end and for engagement of the active clamping jaw 360 (FIG. Fig. 4 ).
  • a plastic or rubber cross-type connecting body 750 which will pass from the U-legs 710.
  • Circular inwardly bent ends 760 of the U-legs 710 form eyebolts that are overlapped either by screws or the foot-like lower parts of the oscillating body 160 and so on the abrasive sheet carrier 14 can be fixed.
  • FIG. 11 shows almost identical to FIG. 1 an abrasive hand tool 10 (orbital sander) with a housing 12, which - unspecified - outside a handle and inside an electric motor.
  • an abrasive sheet carrier 14 which is motor-driven in vibration relative to the housing 12 displaceable and thereby can achieve a Schleifabtrag on a workpiece not shown with a down at its working surface 15 held abrasive sheet 16.
  • the resulting grinding dust is from the front 121 to the rear 122 of the sanding hand tool 10 through the exhaust 120 Ausblas- or. sucked.
  • the abrasive sheet 16 is supported with its back on the underside of the abrasive sheet carrier 14.
  • FIG. 1 Front on the top 13 of the abrasive sheet carrier 14 is identical as in FIG. 1 - Arranged as a two-armed clamping lever 20 with a pivot axis 24 designed clamping means.
  • the clamping lever 20 is therefore here to the description FIG. 1 directed.
  • clamping-clamping device which of the according to FIG. 1 differs by being made of self-resilient parts of wire or spring steel. It consists of a clamping lever 35 with multi-curved or arched active clamping jaws 36, which in principle with the according FIG. 5 matches only a slightly changed contour of the curved area has. He has a handle 39 which forms a pivotable about a by unspecified groove on the upper side 13 of the abrasive sheet carrier 14 and secured by a screw 510 pivot axis 40 pivotable two-armed lever. In this case, the active clamping jaws 36 made of bent spring steel wire.
  • a clamping lever 370 made of corrugated spring plate which supports the passive clamping jaws 38 during clamping of the grinding blade 16 on the inner contour of the active clamping jaw 36. Between the passive 38 and the active clamping jaws 36, the other sanding sheet end 17 opposite the first sanding sheet end 19 is inserted and held.
  • the pliers 34 In this end position, the pliers 34 is wide open and the distance between the active and passive clamping jaws 36, 38 so large that insertion of the dotted end sandpaper end 17 in the pliers 34 is self-evident quasi blind possible without it out of the plane the work surface 15 further bent off or bent over.
  • the passive clamping jaws 38 self-tensioning surface spring 370 in the form of a half times sinusoidal to the clamping small amplitude range determines or limits the clamping force between the active 36 and the passive clamping jaws 38 in the tensioned state, with a short design of the surface spring 370 a very large clamping force at the same time good hinge function is achieved.
  • the clamping lever 35 is released from its clamping position by disengagement from the clamping hook 48 and pivoted about the axis 40 in the clockwise direction, the distance between the clamping points of the abrasive papers 17, 19 again shorter, at the same time the abrasive sheet 16 relaxes from the opening slot 500 is easily removed.
  • FIG. 12 shows the horizontally arranged forceps 34 with the grinding hand tool 10 according to FIG. 11
  • the active clamping jaw 36 approaches the passive clamping jaw 38 and thereby takes the sandpaper 17 due to high friction on drawn as a thickening rubber coating in the direction of the passive jaw 38 and clamps it firmly.
  • the active clamping jaw 36 Upon further pivoting of the active clamping jaw 36, it takes on its pivoting the passive clamping jaw with the clamped sandpaper 17, thus tightens the abrasive sheet 16 and holds it in the streamlined position by the clamping lever 35 is latched to the clamping hook 48.
  • the desired clamping position of the Schleiblatts 16 is made.
  • the solution according to the invention is not limited to the arrangement of a self-locking lever system on the opposite side of the forceps, so instead of a conventional clamping lever system can be arranged with spring preload.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (12)

  1. Ponceuse manuelle, en particulier ponceuse orbitale (10), comprenant un boîtier (12) et un porte-lame abrasive (14), ainsi que des moyens de serrage (20, 23 ; 340, 500) pour fixer des extrémités de lame abrasive opposées (17, 19 ; 155) d'une lame abrasive (16 ; 150) pouvant être supportée sur le porte-lame abrasive (14), les moyens de serrage (20, 23 ; 340, 500) pouvant être déplacés conjointement avec une extrémité de lame abrasive (17, 155) serrée sur ceux-ci à l'écart de l'autre extrémité de lame abrasive (19, 155) également serrée, de telle sorte que la lame abrasive (16, 150) puisse être bloquée de manière serrée en traction, les moyens de serrage (20, 23 ; 340, 500) se composant de matériau élastique à ressort, l'un des moyens de serrage (20, 23 ; 340, 500) étant configuré sous forme de pince (34, 340) et présentant des mâchoires de serrage (36, 38 ; 360, 380) entre lesquelles peut être serrée une extrémité de lame abrasive (17, 19 ; 155), caractérisée en ce que la pince (34 ; 340) peut avec les mâchoires de serrage (36, 38 ; 360, 380) et conjointement avec l'extrémité de lame abrasive serrée (17, 19 ; 155) être bloquée de manière déplaçable autour d'un axe de pivotement (40 ; 400) et de manière libérable dans une position ouverte par pivotement et en ce que l'une des mâchoires de serrage (36, 38 ; 360, 380) est configurée sous forme de mâchoire de serrage active (36 ; 360) pouvant être actionnée à la main et l'autre est configurée sous forme de mâchoire de serrage passive (38 ; 380) pouvant être actionnée et pivotée conjointement au moyen de la mâchoire de serrage active (36, 360), et en ce que la mâchoire de serrage active (360) est une pièce cintrée en fil métallique notamment d'une seule pièce, qui, en particulier avec une nervure transversale, est positionnée en regard d'une surface correspondante de la mâchoire de serrage passive (380)de manière à pouvoir être comprimée à la manière d'une mâchoire de pince.
  2. Ponceuse manuelle selon la revendication 1, caractérisée en ce que la mâchoire de serrage active (36 ; 360) s'appuie lors de la fermeture contre la mâchoire de serrage passive (38 ; 380) précontrainte de manière élastique et entraîne, en particulier fait pivoter, celle-ci dans la position de serrage pouvant être fixée, à l'encontre de la précontrainte élastique.
  3. Ponceuse manuelle selon la revendication 2, caractérisée en ce que la mâchoire de serrage active (36 ; 360) fait partie d'un levier de serrage à deux bras (35 ; 350) dont un bras de levier sert de poignée (39 ; 390) qui peut être bloquée de manière desserrable dans sa position de serrage.
  4. Ponceuse manuelle selon la revendication 3, caractérisée en ce que la pince (34 ; 340) peut pivoter autour de l'axe de pivotement (40 ; 400) entre deux positions d'extrémité qui définissent sa position de serrage et de desserrage.
  5. Ponceuse manuelle selon la revendication 4, caractérisée en ce que les surfaces des mâchoires de serrage active et passive (36, 38) possèdent une grande rugosité et/ou une grande adhérence.
  6. Ponceuse manuelle selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la mâchoire de serrage passive (380) est une pièce élastique à ressort qui est disposée rigidement avec une extrémité au niveau du côté supérieur du porte-lame abrasive (14).
  7. Ponceuse manuelle selon la revendication 6, caractérisée en ce que la mâchoire de serrage passive (380) est un ressort à lame et/ou un fil élastique à ressort.
  8. Ponceuse manuelle selon la revendication 7, caractérisée en ce que la lame abrasive (150) peut être serrée avec une déformation minimale de manière ajustée entre la mâchoire de serrage active (360) et la mâchoire de serrage passive (380).
  9. Ponceuse manuelle selon la revendication 8, caractérisée en ce que la mâchoire de serrage active (360) forme un tronçon d'axe (410) avec lequel elle s'appuie dans un renfoncement du porte-lame abrasive (14) et forme à cet endroit l'axe de pivotement (400).
  10. Ponceuse manuelle selon la revendication 9, caractérisée en ce que la mâchoire de serrage active (360), sur un côté, à la suite du tronçon d'axe (410), forme le levier de serrage (350) et de l'autre côté, à l'extrémité de l'autre tronçon d'axe (410), présente des moyens (370, 650, 660, 670) pour amortir les vibrations.
  11. Ponceuse manuelle selon la revendication 10, caractérisée en ce que les moyens pour amortir les vibrations peuvent être associés à un prolongement du tronçon d'axe (410) et s'appuient de manière précontrainte sur le porte-lame abrasive (14).
  12. Ponceuse manuelle selon la revendication 11, caractérisée en ce que la lame abrasive (16 ; 150) peut être introduite entre les mâchoires de serrage (22 ; 220 ; 1220 ; 500) et le porte-lame abrasive (14), la mâchoire de serrage (22 ; 220 ; 1220 ; 500) ne pouvant être ouverte que par contact avec la lame abrasive (16 ; 150) qui - déplacée à l'encontre de la direction d'insertion - peut être bloquée automatiquement du fait de ce déplacement.
EP03709600.5A 2002-07-16 2003-02-13 Outil a poncer Expired - Lifetime EP1523397B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10232055A DE10232055A1 (de) 2002-07-16 2002-07-16 Schleifhandwerkzeugmaschine
DE10232055 2002-07-16
PCT/DE2003/000379 WO2004016390A1 (fr) 2002-07-16 2003-02-13 Machine-outil à poncer

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EP1523397A1 EP1523397A1 (fr) 2005-04-20
EP1523397B1 true EP1523397B1 (fr) 2014-10-29

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EP03709600.5A Expired - Lifetime EP1523397B1 (fr) 2002-07-16 2003-02-13 Outil a poncer

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US (1) US7131899B2 (fr)
EP (1) EP1523397B1 (fr)
CN (1) CN100371132C (fr)
DE (1) DE10232055A1 (fr)
WO (1) WO2004016390A1 (fr)

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DE102006035977A1 (de) * 2006-08-02 2008-02-07 Robert Bosch Gmbh Schleifhandwerkzeugmaschine mit neuer Schleifblattzugspannung
CN201493733U (zh) * 2009-08-03 2010-06-02 南京德朔实业有限公司 砂光机
WO2013074735A1 (fr) * 2011-11-17 2013-05-23 Black & Decker Inc. Accessoires pour faire osciller des outils électriques
USD846962S1 (en) * 2016-12-13 2019-04-30 Festool Gmbh Sanding and polishing machine
CN111360710A (zh) * 2020-04-22 2020-07-03 郑伟 快速装夹砂纸的模型制作用多功能打磨板
CN113664637B (zh) * 2020-10-24 2024-07-05 湖南梨树园涂料有限公司 一种涂料墙分割线打磨定位装置

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Also Published As

Publication number Publication date
US20050085172A1 (en) 2005-04-21
WO2004016390A1 (fr) 2004-02-26
CN1668422A (zh) 2005-09-14
EP1523397A1 (fr) 2005-04-20
DE10232055A1 (de) 2004-02-05
CN100371132C (zh) 2008-02-27
US7131899B2 (en) 2006-11-07

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